Table 3: Test result under different flow velocity with real sand quality equal to 30g and the diameter between 20 to 40 mesh.

     Velocity(m/s)      Real Value(g) Measurement Value(g) Measurement Error(%)
     9.3      30 24.0518 59.48
     10.0      30 28.8543 11.46
     13.2      30 29.6064 3.94
     16.0      30 29.6752 3.25
     18.1      30 29.6732 3.27
     20.8      30 29.7843 2.16
     23.3      30 29.7423 2.58
     24.6      30 29.7921 2.08
     26.7      30 29.8147 1.85
     28.5      30 30.1724 1.72
     30.1      30 30.1693 1.69
     32.5      30 30.0854 0.85